/* pages/course/course.wxss */
html {
  background: #fff;
  height: 100%;
}
.msk-box {
  display: block;
  width: 100%;
  height: 100%;
}
.msk-box .mb-top {
  display: block;
  width: 100%;
  height: 2.5rem;
  background: #fff;
  border-bottom: 0.05rem solid #eee;
  position: fixed;
  top: 2.2rem;
  left: 0;
  z-index: 500;
}
.msk-box .mb-top .mbt-ss {
  display: block;
  width: calc(100% - 1.5rem);
  height: 1.5rem;
  background: #eee;
  border-radius: 0.75rem;
  margin: 0.5rem auto 0.5rem auto;
  overflow: hidden;
}
.msk-box .mb-top .mbt-ss img {
  display: block;
  width: 0.7rem;
  height: 0.7rem;
  float: left;
  margin: 0.4rem 0 0.4rem 0.75rem;
}
.msk-box .mb-top .mbt-ss input {
  display: block;
  width: calc(100% - 1.95rem);
  height: 1.5rem;
  font-size: 0.7rem;
  line-height: 0.7rem;
  color: #333;
  float: left;
  margin-left: 0.5rem;
  border: none;
  background-color: #eee;
  outline: none;
}
.msk-box .mb-l {
  display: flex;
  width: 5rem;
  height: calc(100% - 7.15rem);
  background: #f5f5f5;
  position: fixed;
  left: 0;
  top: 4.75rem;
  bottom: 2.45rem;
  z-index: 500;
  overflow-y: scroll;
}
.msk-box .mb-l .scroll_wrapper_column {
  width: 100%;
}
.msk-box .mb-l .mbl-btn {
  display: block;
  width: 100%;
  height: 2.5rem;
  background: #f5f5f5;
  font-size: 0.7rem;
  line-height: 2.5rem;
  color: #777;
  text-align: center;
}
.msk-box .mb-l .active {
  background: #fff;
  color: #f9272a;
}
.msk-box .mb-r {
  display: flex;
  width: calc(100% - 5rem);
  height: calc(100% - 7.15rem);
  position: fixed;
  right: 0;
  bottom: 2.45rem;
  z-index: 500;
  top: 4.75rem;
  overflow-y: scroll;
}
.msk-box .mb-r .mbr-box {
  display: block;
  width: calc(100% - 1.5rem);
  height: 4rem;
  padding: 0.75rem 0.75rem 0.75rem 0;
  margin-left: 0.75rem;
  position: relative;
}
.msk-box .mb-r .mbr-box::after {
  content: '';
  position: absolute;
  z-index: 0;
  left: 0;
  bottom: 0;
  height: 0.05rem;
  width: 100%;
  background: #e5e5e5;
  transform: rotateX(60deg);
  -ms-transform: rotateX(60deg);
  -moz-transform: rotateX(60deg);
  -webkit-transform: rotateX(60deg);
  -o-transform: rotateX(60deg);
}
.msk-box .mb-r .mbr-box .mbrb-img {
  display: block;
  width: 5.5rem;
  height: 4rem;
  float: left;
  border-radius: 0.5rem;
}
.msk-box .mb-r .mbr-box .mbrb-img img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 0.5rem;
  object-fit: cover;
}
.msk-box .mb-r .mbr-box .mbrb-wz {
  display: block;
  width: calc(100% - 6.25rem);
  height: 4rem;
  float: right;
}
.msk-box .mb-r .mbr-box .mbrb-wz .mbrbw-bt {
  display: block;
  display: -webkit-box;
  width: 100%;
  height: 2.2rem;
  font-size: 0.8rem;
  line-height: 1.1rem;
  color: #333;
  text-align: justify;
  font-weight: bold;
  word-break: break-all;
  text-overflow: ellipsis;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  margin-top: 0.25rem;
}
.msk-box .mb-r .mbr-box .mbrb-wz .mbrbw-js {
  display: block;
  width: 1.9rem;
  height: 0.9rem;
  border: 0.05rem solid #f9272a;
  border-radius: 0.2rem;
  font-size: 0.6rem;
  line-height: 0.9rem;
  color: #f9272a;
  text-align: center;
  float: left;
  margin-top: 0.5rem;
}
.msk-box .mb-r .mbr-box .mbrb-wz .mbrbw-jg {
  display: block;
  width: auto;
  font-size: 0.5rem;
  line-height: 1rem;
  color: #f9272a;
  float: right;
  margin-top: 0.5rem;
}
.msk-box .mb-r .mbr-box .mbrb-wz .mbrbw-jg label {
  font-size: 0.7rem;
  font-weight: bold;
}
